1.

The aquatic animals in the polar region survive even in freezing temperature. This can be explained by:

A. The very thick layer of fat deposition in their skin
B. By migrating to temperate region during cold times
C. Due to the high density of water at 4oC
D. Due to the neutral pH of the soil at very cold condition
Answer» D. Due to the neutral pH of the soil at very cold condition


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